Assume that random guesses are made for fifteen multiple choice questions on a medical admissions test, so that there are n= 15 trials, each with a probability of success (correct) given by p= 0.25. Find the probability that the number x of correct answers is fewer than 7. The probability that the number x of correct answers is fewer than 7 is (Round to three decimal places as needed.)

College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter9: Counting And Probability
Section9.3: Binomial Probability
Problem 2E: If a binomial experiment has probability p success, then the probability of failure is...
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Assume that random guesses are made for fifteen multiple choice questions on a medical admissions test, so that there are n= 15 trials, each with a probability of
success (correct) given by p= 0.25. Find the probability that the number x of correct answers is fewer than 7.
The probability that the number x of correct answers is fewer than 7 is
(Round to three decimal places as needed.)
Transcribed Image Text:Assume that random guesses are made for fifteen multiple choice questions on a medical admissions test, so that there are n= 15 trials, each with a probability of success (correct) given by p= 0.25. Find the probability that the number x of correct answers is fewer than 7. The probability that the number x of correct answers is fewer than 7 is (Round to three decimal places as needed.)
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